Evaluate the two shapes separately and then add them together.
Trap:
A = [tex]\frac{b1 + b2}{2}*h[/tex]
= [tex]\frac{11.75 + 18}{2}*6.12[/tex]
= [tex]\frac{29.75}{2}*6.12[/tex]
= 91.035
Triangle
A = [tex]\frac{1}{2} * b * h[/tex]
= [tex]\frac{1}{2} * 12 * 13.42[/tex]
= 80.52
Trap + Triangle
91.035 + 80.52
= 171.555
Answer: 171.555 in²
